[ACPI] If ACPI is disabled by DMI BIOS date, then

turn it off completely, including table parsing for HT.
This avoids a crash due to ancient garbled tables.
acpi=force is available to over-ride this default.
http://bugzilla.kernel.org/show_bug.cgi?id=1434

diff --git a/arch/i386/kernel/dmi_scan.c b/arch/i386/kernel/dmi_scan.c
index 6b6e8713c91b8ed017f2fde79757106b3c1dde4e..dd079e84cf5ec34034c76f5fcb563f60b9770d91 100644 (file)
--- a/arch/i386/kernel/dmi_scan.c
+++ b/arch/i386/kernel/dmi_scan.c
@@ -1011,6 +1011,7 @@ static __init void dmi_check_blacklist(void)
                                printk(KERN_NOTICE "ACPI disabled because your bios is from %s and too old\n", s);
                                printk(KERN_NOTICE "You can enable it with acpi=force\n");
                                acpi_disabled = 1; 
+                               acpi_ht = 0;
                        } 
                }
        }